Transcript
DATASHEET
K2 High Efficiency 2 Channels Amplifier for Professional Applications
PRODUCT DESCRIPTION The Powersoft K2 is a professional power amplifier designed to meet the most stringent requirements of professional users in concert touring, sound reinforcement and professional fixed installations. Designed by Powersoft R&D team the K2 is exclusively built in Italy with internal components selected for premium quality and proven durability. Each modular subassembly is pre-tested, and the assembled K2 receives a rigorous 48 hours burn-in before through final check-out on precision test equipment for total quality control. The K2 incorporates the legendary patented Powersoft universal switching mode power supply up to 400VAC tolerant with Power Factor Correction providing users with worldwide AC acceptance and low consumption. Powersoft bridgeable switch mode fixed frequency class D patented outputs provide high quality sound, excellent damping factor and cooler circuits for stable performances over time and longer amplifier life. LCD display with lockable user menu for easy control of all amplifier settings. Optional DSP provides full high quality on board sound processing. Sensing and communication board, standard on RS485 bus, Ethernet optional, provides full control and monitoring through proprietary software running on external PC, compatible with all other Powersoft K, D, Q and QTU Series amplifiers. The Powersoft K2 is CE approved.
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K2 FEATURES • • • • •
Powersoft legendary universal switch mode power supply up to 400VAC tolerant with Power Factor Correction Fixed frequency switch mode bridgeable output Patented output filter with ripple cancellation network LCD interactive display and front panel meters Lockable user menu for setting max output voltage, max mains current draw, digital output attenuation,
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gain selection, gate selection, limiter and real time monitoring of: load impedance, AC mains voltage, output voltage, internal temperature with downloadable log file of all functional fault events with time related trace Neutrik© XLR balanced inputs with loop thru XLR and Speakon© outputs connectors Fully protected circuit design with: ¾ AC protection: shut down power supply when AC mains voltage is outside operating range ¾ Turn on/off muting: for 4s at turn on and soon after turn off amplifiers outputs are muted ¾ Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output ¾ DC protection: protects against infrasonic signal at the outputs ¾ VHF protections: protects the loudspeakers against non audible, strong, non musical very high frequency signals ¾ Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits ¾ Thermal protection: when output rails reach 75°C (167°F) amplifier will reduce max output to help cooling while when rails reach 85°C (185°F) outputs will be muted ¾ Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output Optional DSP, with fixed latency of 2 ms, with up to 48dB/oct IIR and FIR cross-over filters, up to 16 eq filters per output channel, up to 8s of total delay, peak limiter and true power limiter, patented damping factor and cable resistance compensation network Optional Ethernet board travels, on the same CAT5 cable, control and up to 2 AES3 digital audio channels with full redundant ring topology Temperature controlled continuous variable speed fan, front to back airflow Smart card reader for preset load/save and firmware upgrades Detachable AC mains cable with IEC C19/22.2 (16A for EU, 20 A for USA) socket Modular construction Full four years warranty
POWER SPECIFICATIONS
8 Ω Stereo
4 Ω Stereo
2 Ω Stereo
8 Ω Bridged
4 Ω Bridged
EIAJ test, 1 kHz, 1% THD
2 x 1000 W
2 x 1950 W
2 x 2400 W
1 x 3900 W
1 x 4800 W
K2_DATASHEET_0309_EN
www.powersoft-audio.com
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K2
Datasheet
GENERAL SPECIFICATIONS Power requirements Power factor cos (ϕ) Idle power
AC 95V-265V, 50/60 Hz up to 400V tolerant
Consumption Thermal emission (1/8 power @ 4 Ω) Thermal emission (1/4 power @ 4 Ω) Cooling Environmental operating temperature Construction External dimensions Net Weight-Shipping Weight
more than 0,90 from 500W to full power 152 VA (0,66A @ 230V / 1,32A @ 115V) 743 VA, 3,2A @ 230V, 6,4A @ 115V (1/8 max output power @ 4 Ohm) 1331 VA, 5,7A @ 230V, 11,5A @ 115V (1/4 max output power @ 4 Ohm) 783 BTU/Hour 1124 BTU/Hour Temperature controlled continuous variable speed fan, front to rear airflow 0°-45° C (32°-113° F) 1 mm (0,04 in) steel chassis, 3 mm (0,12 in) steel front panel, 3 mm (0,12 in) screw hole protection, 3 mm (0,12 in) steel side reinforcement & rear support, 3 mm (0,12 in) steel removable dust cover 1 standard rack unit, 360 mm deep (14,2 in) 8 Kg (17,6 Lbs) – 9,5 Kg (20,9 Lbs)
FRONT & REAR PANEL SPECIFICATIONS Input connectors
Balanced Neutrik© XLR with loop thru with positive on pin 2
Output connectors Power switch LED indicators Power connector Power cable Analog/AES input switch Link switch
Neutrik© Speakon© NL4MD (positive on paralleled 1+/2+, negative on 1-/2- for stereo mode, positive on 1+/2+ of channel 1 and negative on 1-/2- of channel 2 for bridge mode) Front panel push on/push off mains power switch 7 led meter (5 green, 1 yellow, 1 red), show current or voltage (user menu selectable), top yellow and red show alarm with protect description on LCD panel IEC 20A on rear panel IEC120A/Schuko for EU, IEC20A/American 15A 3 pin plug Rear panel switch to select AES3 digital input on channel 2 XLR input on DSP equipped amplifiers Rear panel link switch to connect input channel 1 to input channel 2
AUDIO SPECIFICATIONS Input impedance Input sensitivity @ 8Ω Maximum input level Gate Gain Frequency response S/N ratio
10 KΩ, balanced 4,46V@26dB, 3,15V@29dB, 2,23V@32dB, 1,58V@35dB gain 27dBu@26dB, 24dBu@29dB, 21dBu@32dB, 18dBu@35dB gain -52dBu@26dB, -55dBu@29dB, -58dBu@32dB, -61dBu@35dB gain 26, 29, 32, 35 dB user menu selectable 20Hz-20KHz (+/-0,2dB) for 1W @ 8Ω > 110 dB/A (20-20K Hz A weighted)
Crosstalk
>72 dB @ 1 KHz
Slew Rate @ 8 Ω
50V/μs input filter bypassed
Damping factor
>5000 @ 20-200 Hz
THD+N
<0,5% from 1W to full power (typically <0,05%)
SMPTE IMD DIM100 IMD Max Output V / A
<0,5% from 1W to full power (typically <0,05%) <0,5% from 1W to full power (typically <0,05%) 140 V / 75A
DSP SPECIFICATIONS A/D Converter D/A Converter Memory Digital input Delay
Dual 24 bit 96 KHz Tandem© architecture with 127dBA of dynamic range and THD<0,005% (20-20K Hz) Dual 24 bit 96 KHz Tandem© architecture with 122dBA of dynamic range and THD<0,003% (20-20K Hz) 8MB RAM, 2MB flash for presets AES3 with selectable glitchless analog audio inputs back-up Up to 8s @96KHz, 4s on the input section, 2s for each output, sample by sample stepping
Cross-over filters Output equalizer Input equalizer Cable Compensation Network Limiter
Butterworth, Linkwitz-Riley, Bessel, Arbitrary Asymmetric 6dB/oct to 48dB/oct (IIR), linear phase (FIR), Hybrid (FIR+IIR) 16 full parametric per channel, IIR: peaking, hi/lo Shelving, hi/lo Pass Eq., Band pass, Band stop, All pass Three layers of 32 filters each Up to 2 Ohm negative/positive compensation of cable resistance for optimal speaker control Peak limiter and true power limiter on each output
Powersoft reserves the right to make improvements in manufacturing or design who may affect product specifications
Powersoft S.r.l. Via Enrico Conti, 5 Scandicci (FI) – Italy TEL: +39 055 7350230 FAX: +39 055 7356235
[email protected] K2_DATASHEET_0309_EN
www.powersoft-audio.com
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